July 18th 2007
Calculate AD July 9th 2007
This is definitely one of the hardest number puzzles on this site.
A teacher says: I'm thinking of two natural numbers bigger than 1. Try to guess what they are.
The first student knows their product and the other one knows their sum.
First: I do not know the sum.
Second: I knew that. The sum is less than 14.
First: I knew that. However, now I know the numbers.
Second: And so do I.
What were the numbers?
July 2nd 2007
A teacher thinks of two consecutive numbers between 1 and 10. The first student knows one number and the second student knows the second number. The conversation of the students is as follows:
First: I do not know your number.
Second: Neither do I know your number.
First: Now I know.
Will you find all 4 solutions?
June
June 25th 2007
Calculate Spearman's Rank Correlation Coefficient of this data June 18th 2007
Simplify the following and solve
June 11th 2007
Prove that:
June 4th 2007
Give the Minimum (or maximum) points for each of these quadratics:
May
May 28th 2007
Simplify the following
May 21st 2007 (Difficult)
If the radius of the circle is 10cm. What is the length of AB?
HINT: Start with circle theorems and move to cosine rule..... May 14th 2007
Calculate the area of the shaded region May 7th 2007
If AB is 4cm, BC is 10cm, AE is 2.5cm and CD is 10.5
Calculate AD and BE
April
April 23th 2007
I use a piece of wire 100cm long to make a rectangle.
What is the biggest area that can be contained within the wire rectangle?
(HINT: if the length of the rectangle is x, what would the width be?) April 16th 2007
Use completing the square to solve the following
April 2nd 2007
Simplify the following:
March
26th March 2007
Simplify the following
leave answer in SURD form 19th March 2007
Solve the simultaneous equations
a) Graphically
b) Algebraically 12th March 2007 5th March 2007
Simplify the following:
February
26th Feb 2007
a) work out the other angles here: 19th Feb 2007
a) work out the area if the perimeter is 77cm:
Table of Contents
July
July 23nd 2007
work out the hypotenuse side.
July 18th 2007
Calculate AD
July 9th 2007
This is definitely one of the hardest number puzzles on this site.
A teacher says: I'm thinking of two natural numbers bigger than 1. Try to guess what they are.
The first student knows their product and the other one knows their sum.
First: I do not know the sum.
Second: I knew that. The sum is less than 14.
First: I knew that. However, now I know the numbers.
Second: And so do I.
What were the numbers?
July 2nd 2007
A teacher thinks of two consecutive numbers between 1 and 10. The first student knows one number and the second student knows the second number. The conversation of the students is as follows:
First: I do not know your number.
Second: Neither do I know your number.
First: Now I know.
Will you find all 4 solutions?
June
June 25th 2007
Calculate Spearman's Rank Correlation Coefficient of this data
June 18th 2007
Simplify the following and solve
June 11th 2007
Prove that:
June 4th 2007
Give the Minimum (or maximum) points for each of these quadratics:
May
May 28th 2007
Simplify the following
May 21st 2007 (Difficult)
If the radius of the circle is 10cm. What is the length of AB?
HINT: Start with circle theorems and move to cosine rule.....
May 14th 2007
Calculate the area of the shaded region
May 7th 2007
If AB is 4cm, BC is 10cm, AE is 2.5cm and CD is 10.5
Calculate AD and BE
April
April 23th 2007
I use a piece of wire 100cm long to make a rectangle.
What is the biggest area that can be contained within the wire rectangle?
(HINT: if the length of the rectangle is x, what would the width be?)
April 16th 2007
Use completing the square to solve the following
April 2nd 2007
Simplify the following:
March
26th March 2007
Simplify the following
leave answer in SURD form
19th March 2007
Solve the simultaneous equations
a) Graphically
b) Algebraically
12th March 2007
5th March 2007
Simplify the following:
February
26th Feb 2007
a) work out the other angles here:
19th Feb 2007
a) work out the area if the perimeter is 77cm: